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Indeed, the core idea behind ERC-404s is to make it easier to fractionalize, split ownership and improve liquidity when trading non-fungible tokens (NFTs). There might genuinely be something to the idea. ERC-404 combines two existing token standards, ERC-20 and ERC-721, used for minting regular Ethereum-based tokens and NFTs, respectively, in a bid to create “semi-fungible” tokens.